Nut-lock.



wi hawom Q Fe. 21,4;

No.824.177. A PATBN-TED'J-UNE 26,1906

- v J. w. GILBERT.

NUT LOCK.

APPLIOATION FILED JUNE 2.190s.

s AT s PATENT orsron.

1701 at} whom it concern:

Be itknown that I, JAMES WILLIAM GIL- BERT, a cltiz'en of the United States, residing at, Birmingham, in-the county of Jefferson.

and State of Alabama-,have invented new which thefollowing is a specification.

" and useful Improvements in Nut-Locks,of

My invention pertains to nut-locks and contemplates theprovision of an economlcal,

'rq easilya plied, and reliable nut-locking wa'sher esigned more especially for use in the making of rail-joints.

The invention willbe fully understood from the 'following 'description and claimwhen taken in connection with the accompanying drawings, forming part of this 'specification, in wlnch-- Figure lfis a side elevation of a rail-joint.

embodying three of my novel washers. Fig.

6 2 is .'a transverse section taken in'the' plane "partsin all of the. views of the drawings, referringto Which- I I A A arethe meeting ortions of two T 1 rails B is a fish-plate lsposed at one-side of the rails and having the usual base-flanged. C C are boltsextending through the rails and fish- 1ates,; and D .Dnuts mounted on the indicated by the line 2 2 ofFi ward the ri ht, and Fig. 3 is alront elevation "of. one of t e washers as the same appears precedent to application;

' Similar .letters designate corresponding said olts. These; arts'may beand'prefelt.

- ably-are of the stan ard sizes.

MM are my novel washers, three of which are shown in use in Fig. 1; These washers are identical in construction, and therefore a detailed description of the one shown in Fi 3 will suffice to im art a definite understan ing of all. The said washer, Fig. 3, is formed of a sin 1e piece" of ap ropriate bendable metal and is provided w1t a central aperture d oi-a size to receive a boltC, an upper edge b, which describes a semicircle, a lower rectangular portion c, and a recess m in the horizontal edge of said ort'ion c, the wall of which recess m prefera 1% describesan arc of a cirole-concentric wit the upper edge I) for a pu ose presenlgz set forth. 7

- e washers are positioned on the-bolts 0 between the plate B and thenuts D,Fig's. 1

Specification of- Letters iatent.

' Application filed-June 2,1905. $crial1le.263.4 52.

1 looking to latented June 26, 1906.

and 2, and by reason of the upper edges of the washers describin semicircles it will be observed that the was ers may be bent outwardly and against sides of thesquare nuts throughout-the length of said sides to effect secure locking of the nutsirrespective of the points of the circle at whichthe'said sides'ot the nuts stop.

It will be observed that the nuts D of my improvement are of such size that the distance between opposite corners of the nuts corresponds eipproximately to the distance between the ange of the fish-plate and the top ed e of said plate, this to secure all the .strengt possible'in the nuts. It will also be observed that the upper ed es of the washers extend to the upper edge 0 the fish-plate, so

that the nuts can be locked in any 0 the po sitions shown in Fig. -1, and this by portions of the. washers extending throughout the length of the adjacent sides of the nuts; and

it will further be observed that while the corners of the large nuts move in front of the recesses m in the washers and barely pass the flange of the fishplate'in rotating on the bolts burs which ordinarily occur at the corners of the nuts are prevented fromdragging on the lower edges of the washer, and hence the nuts may be turned tight against the washers with but a minimum amount of fort.

With a view of econ'omizing in-the production of the washers M the walls of the recesses *rit'a're preferably arranged to describe circles concentric washers.

I claim- In anu't-lock, the combination of a T rail, a fish-plate arranged against the web and between the base and the head of the rail, and having 'a base flange,- a bolt extending with the upper edges 7) of the through the web of the rail and the fish-plate,

ing in. eight to the distance between t e upand bears against the said 11 per edge; the said washer corrres ondper side of the flange of the fish plate and the In testimony whereof I have hereunto set upper edge of said fish-plate, and a nut turned my hand in presence of'two subscribing wit to up on the bolt and egalnst the washer; the nesses.

seid nut being of such a size that the dis- JAMES WILLIAM GILBERT. tence between opposite corners thereof cor responds approximately to the distance be Witnesses:

I tween the upper side of the flange of the fish- J HN M. CALDWELL,

plate and the upper edge of said plate JOE EMBRY. 

